Crystalite Last Lap
Jeff R Graham shares his opinions and thoughts on various topics in Just Ask Jeff. See what his answers are to What is a Last Lap and how do I use it?
Colored Stone Grading System
“Just Ask Jeff” shares his thoughts on the Color Stone Grading System of The GIA. In May 2008, he had been informed that the grading system was modified.…
Taafeite Value, Price, and Jewelry Information
Taaffeite reacts to most gemological tests like mauve-colored spinel, but can be distinguished on the basis of its birefringence. Additional…
Understanding Gem Synthetics, Treatments, And Imitations, Part 1: An Introduction
Tech advances and market forces make it essential for gem buyers to know the science behind synthetic gemstones and gem formation. Learn the basics…
List of False or Misleading Gemstone Names
A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source “Gemstones of the World, 3rd Edition, Walter…
Gem Price Guide
A guide for the price of various gemstones that is based on various sources for commonly traded goods. However, gems are sold outside this range…
A Novices View of Learning How to Facet
Gemstones fascinate. Everyone loves them, but few can craft them. Knowing tips and the equipment can help novices learn how to facet easier.
Synthetic Gemstone Inclusions
Identifying lab-created gems is a critical skill for gemologists. Learn how to spot the most common synthetic gemstone inclusions.
Tucson 2002
This year we asked our members for their impressions of the Tucson show. Here are their impressions. A little insight on the Tucson 2002 extravaganza.…
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